Leaf of loose-leaf books



Patented Mar. 26, 1929.

UNITED STATES PATENT orifice.

LEAF OF LOOSE-LEAF BOOKS.

Application filed August 5, 1927, Serial No.

This invention has relation to leaves for use in loose leaf books orbinders and has :For object the provision of a leaf especially adaptedfor use in systems ot bookkeeping; in which the leaf is removed from thehook or binder and placed in a typewriter or addingmachine by which theentries are made. The invention further has for object the provisionof.' a lea-E` which may be caused to project beyond the other leaves ota book, or, in other words be off set, for the purpose olf providing,`ready and easy reference to such sheet.

A loose leali, in accordance with this invention has a part oit the oneend cut away so to torni straight sided projections withoutimdercrtting` and a hole through 'which the lookin or biinling` postextends.

A loose leaf, in accordance with this involition, has at least twoprojections, the iree edges of which are in alignment, and

. the intermediate cutaway portion has a Ala?.

tree edge which is parallel with those ot the projections. Ur thecut-away portion is shaped so that its edge extends vor billiges towardsan imaginary line joining; the 'free edges of the projections: Parts ofthe edge of the cut-away portion may extend to suchA line and be alignedwith the iree edges of the projections.

The hole ttor the locking;l or binding post o'i" the binder or cover ispreferably placed cent 1ally o?? the two projections and may be suchthat it permits the leaf to be moved sideways relatively to the lockingor binding; post so that a portion thereof projects beyond the otherleaves, or, in other words, the lealE is 'oll' set, and thus constitutesa marker. Y

ln order that the invention, the object and nature of which have beenset' l'orth, may he clearly and readily understood, reference will newbe made to the. accoinpanying` sheet o'l drawings on which Fourembodiments oli the invention are illustrated.

Fig. 1 is a :face view showing two leaves placed the one on the other,one being` displaced relatively to the other or on set.

Figs. 2, 3 and 4; are similar views to Fig. 1, each ot leaves ofmodilied form.

Referring to Fig. 1;

Each leat 1l has a part of on-e end cut `away so Vas to `form twostraight sided projections 12, 13 without undercutting. Each `leali 11also has a hole 141 through which the locking or binding post of thebinder or 210,892, and in Great Britain May 8, 1927.

cover extends. The free edges ot the projcctions 12, 13 are aligned andthe free edge ot' the cut-away portion is parallel with those o'l. theprojections 12, 13. The hole 111. is placed centrally between theprojections 12, 13 whether the projections be of like or unlike width.ln the embodiment illustrated, they are ot unlike width, the projection18 being the wider. lVhen the leaves 1.1 are made with projections 12,13 of like width, ready and easy reference to any particular lea'll isafforded by means of book markers. llihen the projections 12, 13 are ofunlike width, any particular leali is'rendered distinctive by olisetting that leaf and this is accomplished by turning the leali over sothat its projections 13, 12 lie upon the projections 12, 13 oi the nextsheet. In Fig. 2 the tree edge ot the cut-away portion oil? lcat 112L issuch that jgntrts 1.5, 16 extend direct] f lroni the inner parteI orroots ol the proj( tions 12, 13 respectively, towards an iniagiifiaryline joiningr the lree edges of the projections 12, .13. A part 17 olithe free edge of the cutaway portion entends to the iinaniiniry line andsuch part is aligned with the ,tree edges ol the projections.

In Fig. 3 the leaves 11" have three projections 12, 13', 18 and twoholes 141, 19. The hole 14; is placed centrally between the projections12, 13 and the hole 19 centrally between the j njejections 12, 18. Alsoin this leali' the part 1.5 ot the cut-away portion does not extenddirectly from the 'inner part or root of the projection 12 but is joinedtherewith by a part 2O which parallel with the tree edge el? theprojection 12. Ordirmrily the leaves 11D `rest on or engage carriers orposts which contact with the projections l2, 13.` Ui'lisetting`elliected by moving the leali to the left so that the leaf rests on orengages the one carrier or post by means of the cut-away portion betweenthe projections 13', 18 and rests on or engages the other carrier orpost by means o'l' the part 2U. liVhen a leaf isvollset, its hole 19coincides with the holes le of the other leaves.

lnFig. l the leaves 11c have only two projections 12, 1 3 and one hole141-, and the latter is of greater width than the correspondinglynumbered hole in the other iguros ol the drawings. Also the parts 1:3,16 of the cut-away portion are united with the inner parts or roots ofthe projections 12, 13 by parts 20, 21, respectively, which y areparallel With the free edges of the proe jections 12, 18. VOrdinarily aleaf engages or rests on the carriers or post-s by means vof the parts20, 21 With the projection 12 contacting with one carrier or post andofi'- settmg is veffected bymoving a sheet to the left so that theprojection 13 contacts with the rother carrier'or post. The hole 14, by

such movement, isv in eect reduced to a sizeV the ost tv e havin@- onone edOe )ro'ections v L Y o a A l f spaced apart4 to engage the outersides ot the posts and provided With a hole for the locking postbetWee-nithe projections.

2. A leaf for use in loose leaf books of the post type having on oneedge projections Vspaced apart to engage the outer sides of the posts,the edge of the part between the project-ions being parallel with theouter edges of the projections, and provided with a hole for the lockingpost between the projections.

3. A leaf for use in loose books` of the poet type having; on one sideprojections which extend beyond the main portion of the edge of snchside, the space formed by and between the projections being adapted toreceive posts of tliebinder, and said leaf being provided with a hole inits main portion situated bet-Ween the projections to receive thelocking post.

Dated this: 22nd day of July, 1927.

VALTER HENRY BROXVNITTG

